Mass spectrometer



FIG. 1 is a front perspective view from a top and left side of an implementation of a new ornamental design of a mass spectrometer.

FIG. 2 is a front view of the mass spectrometer.

FIG. 3 is a back view of the mass spectrometer.

FIG. 4 is a left side view of the mass spectrometer.

FIG. 5 is a right side view of the mass spectrometer.

FIG. 6 is a top view of the mass spectrometer; and,

FIG. 7 is a bottom view of the mass spectrometer.

The broken lines shown are for illustrative purposes and form no part of the claimed design. 

CLAIM The ornamental design for a mass spectrometer, as shown and described. 